These highly luminous active nuclei are found at the visible edge of the universe and nowhere else. super-red giant stars
galaxies
super-massive blackholes
quasars

Select all the true statements about the cosmic microwave background radiation

Buuy which of the following did you include in your response? organs perform specific functions in the body to keep it alive. organelles perform specific functions in cells to keep them alive. done

Blood has traveled from the heart to the toes. which describes the next step of the circulation process?